please i need the answer within five minutes

Chemistry
Tutor: None Selected Time limit: 1 Day

A sample of approximately 5 grams of sodium hydroxide (MM 40) was weighed on an electronic balance. Its mass was found to be 4.796 grams. This sodium hydroxide was dissolved in sufficient water to make 320 mL of solution. What is the molarity of the solution? Enter your answer with three significant figures. 

_____is a Glassware used to transfer the 2.159 M NaOH to be diluted

 <= Glassware used to measure the final volume of the diluted M NaOH

Dec 11th, 2014

The molar of NaOH=4.796/40=0.120 mol

So the molarity of the solution=0.120/320x10-3=0.120/0.320=0.375 mol/L=0.375 M


The second question is not quite clear to me. But the glassware should be a graduated cylinder.

Dec 11th, 2014

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Dec 11th, 2014
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